Random Thought!

As I laid in my bed this weekend feeling very sorry for myself (well I did have Man Flu!”) the strangest thought entered my mind….

You know when you speak to someone on the phone or even converse on a Forum, for some reason you create a picture of the person you are talking to in your mind, now dont say I am the only person this happens to please!

But where do we get this picture from, is it from a memory of someone who sounds similar or a joint effect of known people with similar voices? Or just a random image?

Yet when we meet them they are generally nothing like we expect(that bits not strange!).

Is there some part of our brain that needs to visualise in this circumstance?